7.3 injector driver module fails when warm

Note: The PMD is the same thing as an FSD. Not starting, stalling, hard starting, and hesitation are injection pump symptoms. Problems can include a bad injector pump, the Fuel Solenoid Driver module (FSD) that sits on the injector pump on a turbo diesel only and the fuel shutoff solenoid (FSS). This injection pump can be used in naturally aspirated and Stanadyne EFI injection pump, used from 1994 to 2004 in GM light duty pickups, delivery vans and in 1996 to 2004 model year Hummer turbo diesels. I have found used DS4831-5288's for sale as cheap as $24.

On eBay, pumpguy246 sells refurbish DS4831's for $475, and running takeoffs for $50. SS Diesel sells them on their web site for $655. Shops sell a reconditioned DS4831 IP with new PMD for about 700 bucks. Local shops here in Phoenix charge about 1100-1200 dollars: pump removal, refurbish, and reinstall. It's a royal PITA to get to all the stuff you need to take one off and replace it. Avoid these unless it's been upgraded with the ceramic rollers - the metal rollers inside them will shred unless you run an additive 24x7.Īs for replacement - I'd consider having a Stanadyne shop do the work. Also look for a green metal tag on one corner of the IP - this generally means that the rebuilder has revamped it with the latest internal changes.įrom what I can tell of the history, the DS4831-5067 is the first generation. There are DS4831-5068's, which are really designed for a 94 TD Chevy Diesel 3500 HD.įor our trucks, we should be using a DS4831-5288 or a DS4831-5521. After the DS4831 is a revision number that can be vehicle specific. If this site has helped you consider a Donation.

7.3 injector driver module fails when warm